Gustavo Meoño is the coordinator of the Historical Archive of the National Police of Guatemala, or Archivo Histórico de la Policia Nacional (AHPN). As the lead investigator of the Archive, Gustavo has been actively involved in both the preservation of the Archive's documents, and in collecting evidence from these documents to provide accounts of human rights abuses committed during the country's 36-year civil war.

Gustavo has served as president of the Rigoberta Menchú Tum Foundation (Fundación Rigoberta Menchú Tum), an organization based in Guatemala City that has played a crucial role in struggles against impunity for human rights violations related to the prolonged armed conflict in the country.

Gustavo describes how "In this search for information about Carlos’ disappearance, also about the origins of GAM, and what happened to Rosario and her son, we see that these cases are not only a symbol of the repression in Guatemala, but they are also linked to other cases. Those repressive actions against Carlos Cuevas form part of a plan, a series of actions that the security forces of the State took to destroy the activities and organization of the Opposition."